/*
 * Eugen Stoian <stoian.e@gmail.com> 2010
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef CONSTANTSTABLE_H
#define CONSTANTSTABLE_H

#include <QStringList>
#include <QHash>
#include <MathParser_global.h>
#include <Real.h>

class ConstantsTable {
public:
    static void add(const QString& constantName, Real value);

    static Real constant(const QString& constantName);
    static Real find(const QString& constantName);

    static QStringList names();
protected:

    ConstantsTable();

    static ConstantsTable& instance();

    QHash <QString, Real> _constantsHash;
};

#endif // CONSTANTSTABLE_H
